PrizmaX

I recently bought a computer and it lacks a graphics card, my friend tells me for a RX580 armor X you need a 2X4 pin, can connecting a 3X2 and a 1X2 (image below) work together as 1 4x2, i also dont know if its compatible with my mother board or other parts, i dont know how any of that stuff works, i have a b450m DS3H MB, ryzen 3 3200G which relies on integrated graphics right now, and a 500 watt power supply, my case is massive so that isnt an issue, can anyone help?